C语言-leetcode题解之第190题颠倒二进制位.zip

#include <stdio.h> #include <stdlib.h> #include <stdint.h> static uint32_t reverseBits(uint32_t n) { int i; uint32_t res = 0; for (i = 0; i < 32; i++) { res <<= 1; res |= n & 0x1; n >>= 1; } return res; } int main(int argc, char **argv) { if (argc != 2) { fprintf(stderr, "Usage: ./test n\n"); exit(-1); } printf("%u\n", reverseBits(atoi(argv[1]))); return 0; }